What are the most common elements composing Earth?
A. oxygen and silicon
B. carbon and nitrogen
C. hydrogen and helium
D. uranium and plutonium
Answer: A
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What is the fastest speed in the universe?
a. The speed of light. b. The speed of sound. c. 1.1620 × 10^4 mph. d. The speed of the world's fastest rocket ship. e. The speed of electrons in a wire.
According to the _____, the Moon formed elsewhere in the solar nebula and was later taken by Earth
A) condensation hypothesis B) fission hypothesis C) capture hypothesis D) large-impact hypothesis
The specific heat capacity of water is about twice the specific heat capacity of ice. From this information, the amount of heat required to boil 1 kg of water is ________ the amount of heat required to melt 1 kg of ice
a. 1/2 c. 2 times b. equal to d. unrelated to
What is the lowest rung on the astronomical distance ladder?
A: Hubble Flow B: Using Supernovae C: Cepheid Variable D: the Solar System E: PNLF method